Superconducting properties of Rh9In4 S4 single crystals

Udhara S. Kaluarachchi; Qisheng Lin; Weiwei Xie; Valentin Taufour; Sergey L. Bud'Ko; Gordon J. Miller; Paul C. Canfield

doi:10.1103/PhysRevB.93.094524

Superconducting properties of Rh9In4 S4 single crystals

Udhara S. Kaluarachchi, Qisheng Lin, Weiwei Xie, Valentin Taufour, Sergey L. Bud'Ko, Gordon J. Miller, Paul C. Canfield

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Abstract

The synthesis and crystallographic, thermodynamic, and transport properties of single crystalline Rh9In4S4 were studied. The resistivity, magnetization, and specific heat measurements all clearly indicate bulk superconductivity with a critical temperature, Tc∼2.25 K. The Sommerfeld coefficient γ and the Debye temperature (ΘD) were found to be 34 mJ mol-1 K-2 and 217 K, respectively. The observed specific heat jump, ΔC/γTc=1.66, is larger than the expected BCS weak coupling value of 1.43. Ginzburg-Landau (GL) ratio of the low-temperature GL-penetration depth, λGL≈5750 Å, to the GL-coherence length, ξGL≈94 Å, is large: κ ∼60. Furthermore, we observed a peak effect in the resistivity measurement as a function of both temperature and magnetic field.

Original language	English (US)
Article number	094524
Journal	Physical Review B
Volume	93
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.93.094524
State	Published - Mar 28 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.93.094524

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title = "Superconducting properties of Rh9In4 S4 single crystals",

abstract = "The synthesis and crystallographic, thermodynamic, and transport properties of single crystalline Rh9In4S4 were studied. The resistivity, magnetization, and specific heat measurements all clearly indicate bulk superconductivity with a critical temperature, Tc∼2.25 K. The Sommerfeld coefficient γ and the Debye temperature (ΘD) were found to be 34 mJ mol-1 K-2 and 217 K, respectively. The observed specific heat jump, ΔC/γTc=1.66, is larger than the expected BCS weak coupling value of 1.43. Ginzburg-Landau (GL) ratio of the low-temperature GL-penetration depth, λGL≈5750 {\AA}, to the GL-coherence length, ξGL≈94 {\AA}, is large: κ ∼60. Furthermore, we observed a peak effect in the resistivity measurement as a function of both temperature and magnetic field.",

author = "Kaluarachchi, {Udhara S.} and Qisheng Lin and Weiwei Xie and Valentin Taufour and Bud'Ko, {Sergey L.} and Miller, {Gordon J.} and Canfield, {Paul C.}",

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doi = "10.1103/PhysRevB.93.094524",

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AU - Kaluarachchi, Udhara S.

AU - Lin, Qisheng

AU - Xie, Weiwei

AU - Taufour, Valentin

AU - Bud'Ko, Sergey L.

AU - Miller, Gordon J.

AU - Canfield, Paul C.

PY - 2016/3/28

Y1 - 2016/3/28

N2 - The synthesis and crystallographic, thermodynamic, and transport properties of single crystalline Rh9In4S4 were studied. The resistivity, magnetization, and specific heat measurements all clearly indicate bulk superconductivity with a critical temperature, Tc∼2.25 K. The Sommerfeld coefficient γ and the Debye temperature (ΘD) were found to be 34 mJ mol-1 K-2 and 217 K, respectively. The observed specific heat jump, ΔC/γTc=1.66, is larger than the expected BCS weak coupling value of 1.43. Ginzburg-Landau (GL) ratio of the low-temperature GL-penetration depth, λGL≈5750 Å, to the GL-coherence length, ξGL≈94 Å, is large: κ ∼60. Furthermore, we observed a peak effect in the resistivity measurement as a function of both temperature and magnetic field.

AB - The synthesis and crystallographic, thermodynamic, and transport properties of single crystalline Rh9In4S4 were studied. The resistivity, magnetization, and specific heat measurements all clearly indicate bulk superconductivity with a critical temperature, Tc∼2.25 K. The Sommerfeld coefficient γ and the Debye temperature (ΘD) were found to be 34 mJ mol-1 K-2 and 217 K, respectively. The observed specific heat jump, ΔC/γTc=1.66, is larger than the expected BCS weak coupling value of 1.43. Ginzburg-Landau (GL) ratio of the low-temperature GL-penetration depth, λGL≈5750 Å, to the GL-coherence length, ξGL≈94 Å, is large: κ ∼60. Furthermore, we observed a peak effect in the resistivity measurement as a function of both temperature and magnetic field.

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Superconducting properties of Rh9In4 S4 single crystals

Abstract

All Science Journal Classification (ASJC) codes

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